Most of the fish you eat today comes from fish farms. Raised to ensure maximum health, growth, and quality within a confined space. And to do that, modifications are sometimes required.

What happens if those fish escape and reproduce in the wild? Dr. Tillmann Benfey at the University of New Brunswick has eliminated the need for that question. Well, where his fish are concerned. Hes found a way to reproduce fish that are sterile. If they do escape into the wild, there will be no offspring. But they might make for a good underwater feast.